DNA, RNA, Protein Synthesis

The synthesis of a new double strand of DNA begins when the two strands of the original DNA

•  are separated by the breaking of hydrogen bonds between nitrogen bases
• acts  as a template
•  attracts a nitrogen base
•  destroys the entire genetic code

After DNA replication, the two DNA molecules that are made

• are opposite
• are identical
• leave the nucleus
• cannot replicate again

Tags

NGSS.HS-LS3-2

Which scientist produced X ray patterns that showed the fibers of DNA to be twisted?

• Watson
• Crick
• Franklin
• Wilkins

Cytosine and Thymine are

• pyrimidines
• phosphates
• purines 
• nucleic acids

The two strands of a DNA double helix are 

• purines
• pyrimidines
• complementary
• identical

A nucleotide does NOT consist of a

• nitrogen base
• 5 carbon sugar
• phosphate group
• polymerase

New mRNA is made through the process of:

• duplication
• transcription
• translation
• replication

Each combination of three nitrogen bases on messenger RNA forms a (an)

• anticodon
• codon
• enzyme
• nucleic acid

In messenger RNA, each codon specifies a particular

• nucleotide
• purine
• amino acid
• pyrimidine

Which does not carry out its function in the ribosomes?

• mRNA
• tRNA
• rRNA
• DNA